US3759200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing stitching patterns with adjustable workclamp apertures
Assignee: Virginio Rimoldi and Co SpA
•
Filing: 1972-05-17
•
Granted: 1973-09-18
•
Expires: 1992-05-17
Abstract
Abstract A clamping device for moving a fabric workpiece along a supporting surface and through a sewing area in an apparatus for producing stitching patterns in the fabric. The clamping device being provided with control elements for varying the distance between the fabric engaging surface thereof and the supporting surface to effect insertion, adjustment, clamping and release of the fabric as well as return of the clamping device to its initial position for repeating the cycle.
Inventors
- 👤 N Marforio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:28
CPC Classifications
D; D05; D05B; D05B21/00; D05B39/00; D05B65/00; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
In an apparatus for producing stitching patterns in a fabric workpiece having a work supporting surface and a sewing machine operatively associated therewith, the improvement comprising: a. clamping means for gripping the fabric workpiece; b. means for driving said clamping means along the work supporting surface for moving the fabric workpiece from a charging station through a stitching area; c. means for opening said clamping means for insertion and removal of the workpiece; d. control means for actuating said opening means to fully open said clamping means after moving the workpiece through the stitching area; e. traversing means for returning said clamping means to the charging station; and f. means for varying the width of the opening of said clamping means at the charging station for inserting, adjusting and clamping the fabric workpiece.
Claim 2
Dependent Claim
133 words
In an apparatus for producing stitching patterns in a fabric workpiece having a work supporting surface and a sewing machine operatively associated therewith, the improvement comprising: a. clamping means for gripping the fabric workpiece; b. means for driving said clamping means along the work supporting surface for moving the fabric workpiece from a charging station through a stitching area; c. means for opening said clamping means for insertion and removal of the workpiece; d. control means for actuating said opening means to fully open said clamping means after moving the workpiece through the stitching area; e. traversing means for returning said clamping means to the charging station; and f. means for varying the width of the opening of said clamping means at the charging station for inserting, adjusting and clamping the fabric workpiece.
Claim 3
Dependent Claim
27 words
The apparatus according to claim 1 wherein said clamping means comprises a pivotal plate member selectively movable to and from close proxiMity with the work supporting surface.
Claim 4
Dependent Claim
33 words
The apparatus according to claim 1 wherein said means for driving said clamping means includes a supporting frame operatively connected to a driven chain extending for substantially the longitudinal extent of the apparatus.
Claim 5
Dependent Claim
24 words
The apparatus according to claim 3 wherein said means for opening said clamping means includes a pneumatic cylinder operatively connected to said supporting frame.
Claim 6
Dependent Claim
32 words
The apparatus according to claim 4 wherein said control means for actuating said opening means includes a control valve connected to said pneumatic cylinder and disposed for actuation by said clamping means.
Claim 7
Dependent Claim
38 words
The apparatus according to claim 3 wherein said traversing means includes a guide rod on which said supporting frame is slidable and a control switch for reversing the direction of movement of said frame on said guide rod.
Claim 8
Dependent Claim
31 words
The apparatus according to claim 4 wherein said means for varying the width of the opening of said clamping means includes a manually operable valve member connected to said pneumatic cylinders.
References Cited (Backward Citations)
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US2483239A
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US2939414A
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US3517630A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |